If you are on a URL like
https://kagi.com/smallweb?someparamhere
And try Share > Link Here it produces the link
https://kagi.com/smallweb/?someparamhere=?url=<urlhere>
I expected it to either remove the extraneous param or take it into account such that you get either:
https://kagi.com/smallweb/?url=<urlhere>
OR
https://kagi.com/smallweb/?someparamhere&url=<urlhere>
Respectively.
I don't actually know what functionality currently uses query params other than ?url without directly visiting the URL, though, so it's a very minor issue.